American HydraNeng 4040 is a low-pressure reverse osmosis membrane used for source water with medium salt content. For ordinary heavy metal ions, carbonates, organic matter, colloidal substances, bacteria, viruses and other solid impurities, they cannot pass through the low-pressure membrane. There is no bacteria or solid scaling in the filtered water. Today, I will take you to understand the parameters of the product and its use. pros and cons in the process.
Membrane module specifications
Model: Haiderneng CPA2-4040000
Type: low pressure reverse osmosis membrane
Membrane material: aromatic polyamide composite material
Effective membrane area: 85ft² (7.9m²)
Water inlet mesh thickness: 31milil
Average salt rejection rate: 99.5%
Minimum salt rejection rate: 99.2%
Water production: 2250gpd (8.5) m³/d)
Test conditions
Nacl solution concentration: 1500mg/L
Pressure: 225psi (1.55MPa)
Temperature: 25℃
Single membrane element recovery rate: 15%:
Detection solution pH: 6.5-7.0
Advantages and disadvantages of reverse osmosis membrane
Hyde 4040 low pressure reverse osmosis membrane's working pressure can work in a relatively low environment. Under this pressure, the desalination rate of the reverse osmosis membrane is not high, and the water flow rate is relatively large. Likewise, energy consumption will be significantly reduced. Low-pressure reverse osmosis membranes can be used for high-purity water production, such as electronic pharmaceuticals, food industry wastewater treatment, and drinking water production.
Advantages:
1. First of all, HydraNeng CPA 2-4040 low-pressure reverse osmosis membrane requires lower water supply pressure, which greatly reduces the investment cost of pump-related equipment, thereby reducing the cost of membrane components. the cost of. The low-pressure reverse osmosis membrane can reduce the operating pressure of the membrane element while ensuring a high salt rejection rate.
2. Can effectively prevent secondary pollution. Low-pressure reverse osmosis membranes and ultra-low pressure reverse osmosis membranes are larger than cellulose acetate membranes, have low working pressure, large water production, high desalination rate, and high desalination rate, which greatly saves the cost of use and capital investment of the system. Low pressure reverse osmosis membrane retains all the advantages of reverse osmosis membranes. Excellent chemical resistance.
3. Hyde CPA 2-4040 low-pressure reverse osmosis membrane is an ideal membrane module for preparing high-purity water. Compared with traditional reverse osmosis membranes, its salt rejection rate at low pressure is the same as at high pressure. Neutral water flux, high surface potential, high hydrophilicity, and high contamination resistance. Wastewater containing impurities is particularly suitable for treating surface-active substances.
Defects:
Hainen CPA 2-4040 low-pressure reverse osmosis membrane system produces poor water distribution balance along the system process, especially under high water supply salt content, high water supply temperature and long system process conditions Under this condition, it will lead to serious imbalance in membrane production water distribution. Therefore, its working environment should be limited to small systems with low salt content, low water supply temperature, or short system processes.
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